Example description

nag_zgbsv (f07bnc) Example Program Results

Solution
(-3.0000,  2.0000) 
( 1.0000, -7.0000) 
(-5.0000,  4.0000) 
( 6.0000, -8.0000) 

 Details of factorization
                    1                  2                  3                  4
 1  ( 0.0000, 6.3000)  (-1.4800,-1.7500)  (-3.9900, 4.0100)  ( 0.5900,-0.4800)
 2  ( 0.3587, 0.2619)  (-0.7700, 2.8300)  (-1.0600, 1.9400)  ( 3.3300,-1.0400)
 3                     ( 0.2314, 0.6358)  ( 4.9303,-3.0086)  (-1.7692,-1.8587)
 4                                        ( 0.7604, 0.2429)  ( 0.4338, 0.1233)

Pivot indices
          2          3          3          4